Dwarf Noise (Solved)

Using MOD devices
#103

Thanks for getting back to me! I’m going to do some experimenting today.

1 Like
#104

This is what I’m using: https://www.sweetwater.com/store/detail/StageBug6--radial-sb-6-isolator-2-channel-line-isolator

7 Likes
#105

After thinking I had it solved only to go to gigs and find the noise still existed, I think I have found the solution: Dave Parker is right, the TrueTone CS12 works. I am powering the Dwarf (with a 12V tap) plus an Eventide H90 (on the high current 9 volt tap) and it’s dead silent at home and at gigs. The CS 12 has enough current left over to power a couple of other pedals with low current draw.

7 Likes
#106

I guess a question I have is shouldn’t Mod fix the issue that the power supply that comes with the pedal is really not very good?

#107

In looking at options here, seems like I will need to spend just about what I did on the dwarf so far in order to get a working power situation.

#108

@David_Windhausen I bought this power supply from Thomann and it solved the “digital noise” issue

3 Likes
#109

The issue should be fixed on the most recent shipments. You can always write to support@mod.audio and we will find a way to solve (or compensate for the solution that you find) in your particular case

1 Like
#110

I just received my founders edition last week and can confirm that the problem of noise is still very much there. The model number of the power supply that came with my unit is D45C1-120002000 and has a date of 1122.

1 Like
#111

Thanks, I will have to search for a US version of something along these lines.

1 Like
#112

If your USB cable is connected, then disconnect it. I find that I get computer noise if the Dwarf and PC are connected to each other.

2 Likes
#113

Same here. Received my Dwarf three weeks ago and it is very noisy with original power supply. Noise is much lower with different power supply.

1 Like
#114

Well, I received my Dwarf a couple of weeks ago and until I tried coupling the twin outputs into my system it wasn’t showing evidence of being noisy. I simply was using it with the headphones plugged in. But since I’ve plugged it into my mixers I’m finding it awfully noisy, with a horrible high pitched warbling noise. And this seems to be only there when I have both my Behringer Deepmind 12D AND the Dwarf physically plugged into the mixers. I use balanced cables to couple both devices into the mixers. I use two mixers 1) to get enough inputs and 2) so I can switch between 2 different source setups. It doesn’t matter if the Deepmind is turned on or off, if it’s plugged into the same mixer or the other one, I get the noise. This noise was none existent until I plugged the Dwarf in.

There seems to be so many ways of combating noise from the Dwarf that I’m not sure where to start. Maybe try powering one of them from a different power socket/strip will be the first step. Try out the Dwarf’s ground loop compensation and noise reduction. But a lot of the other solutions mean spending money which I really can’t afford.

1 Like
#115

So, one thing I’ve noticed is that if I leave my phone too close to the Dwarf it’ll pick up on cell tower broadcasts veeery easily. Especially when I have a jack cable connected to one of the inputs. It just turns into a big antenna and I can see the input LED light up.

Has anyone with noise issues seen their input LED on as well? Could very well be this kind of electro magnetic interference being picked up

Quite surprised with this actually. This is definitely not the case with the DuoX (although that has completely different circuitry and other bugs on the inputs :#)

1 Like
#116

Solved the majority of my MOD Dwarf noise. I noticed a lot of the posts were talking about ground loop noise. I live in the UK, so decoupling the Earth/Ground from the supplied PSU was a no-no. So I tried swapping out a 12v 2A PSU from one of my other pieces of kit that had the same polarity as the MOD but no ground connection as such. Noise significantly reduced! So I have a Palmer power supply block that has some 9v outputs and 2 switchable outputs that can be set to 9, 12 or 18volts. But because it supplies output via centre negative connection I needed to reverse the polarity at the MOD end. Easily done. I simply purchased an I Spot reverse polarity adaptor cable. Works fine at the moment.

There’s still some residual noise but barely noticeable - and most likely can be attributed to USB noise. If I find it too intrusive I will have a go at sorting it out. But for now, I’m pleased with the noise level.

BTW the I Spot reverse polarity adaptor cable cost me £3.99 from Amazon.

4 Likes
#117

Got the same power supply with my Dwarf which arrived last Thursday (2023-03-23) and it’s pretty noisy. After sticking in the ungrounded power supply of my MOD Duo noise was gone. Then I stuck the D45C1 power supply in an ungrounded socket and most of the noise was gone too. So it’s most probably a ground issue with the Dwarf power supply. My home grid is properly grounded. I’m pretty sure about that because I also work on analogue effects and tube amps (modding, biasing, revising) and I have never had any issues with those while those analogue units can be very picky when it comes to grounding.
The Dwarf power supply has another issue though, it’s AC filtering doesn’t seem to be as good as the one in the MOD Duo power supply, 60Hz hum is a bit higher with the Dwarf supply. So unfortunately I won’t use the Dwarf power supply but will exchange it for a less noisier one. Bit of a bummer because it looks like a sturdy unit.

1 Like
#118

I noticed the same issue, but didn’t wanted to remove the ground from the socket for safety. I bought a Behringer “HD400 Micro Hum Destroyer” for something like 30€ which completely solved the issue. Highly recommended!

4 Likes